33results about How to "Realize reasonable" patented technology

The battery charger (C) for electric vehicles comprises a voltage converter (DC / DC CONV), a power factor correction circuit (PFC) connected upstream of the voltage converter (DC / DC CONV), a controller circuit (PFC CNTR) operatively connected to the correction circuit (PFC) and suitable for piloting the correction circuit (PFC) for the correction of the power factor in the battery charger (C), a retroaction line (L) connected to the output of the voltage converter (DC / DC CONV) and to an input of the controller circuit (PFC CNTR), wherein the controller circuit (PFC CNTR) is suitable for varying the output voltage (VPFC) of the correction circuit (PFC) within a predefined voltage interval and according to the output voltage (VDCOUT) of the voltage converter (DC / DC CONV), in order to let the voltage converter (DC / DC CONV) operate as much as possible around the point of maximum efficiency.

The invention discloses a soft rock tunnel deformation control method based on anchor rod force analysis. A soft rock tunnel is excavated and subjected to deformation control construction from back to front according to multiple segments, and when any segment is excavated and subjected to deformation control construction, the method includes the steps that 1, surrounding rock basic mechanical parameters are determined; 2, the tunnel reserved excavated volume is determined; 3, the tunnel is excavated; 4, a tunnel preliminary bracing structure is determined; 5, tunnel deformation control construction is carried out, wherein in the tunnel preliminary bracing construction process, a flexible mold bracing structure is constructed from back to front; 6, a next segment is excavated and subjected to deformation control construction; 7, the step 6 is repeated multiple times till the full excavation and deformation control construction process of the soft rock tunnel is completed. The soft rock tunnel deformation control method is reasonable in design, convenient to achieve and good in use effect, the reserved excavated volume is determined according to the surrounding rock deformation condition of the soft rock tunnel, the flexible mold bracing structure is adopted for carrying out full-section bracing on the tunnel, the flexible mold bracing structure and the tunnel preliminary bracing structure are in coordination deformation, and deformation of the soft rock tunnel can be effectively controlled.

The invention discloses a command filter limited time fuzzy control method of a permanent magnet synchronous motor. The control method is capable of, in allusion to the existent nonlinear problem in a motor drive and control system, introducing a command filter technology into the traditional backstopping design method, and successfully overcoming the problem of 'computation explosion' in the traditional backstopping control caused by the continuous derivation. A fuzzy logic system is used for approaching the nonlinear function in the system, and the command filter backstopping technology is combined with a fuzzy self-adaption method to construct a fuzzy self-adaptive controller; the limited time method has the anti-interference performance and the robustness to the signals, such as the external load interference; and under the limited time control, the system stability tracking error is small, the dynamic response time is short, and the convergence rate and the interference rejection capability of the system are improved. Compared with the prior art, the control method has the faster response speed, the stronger anti-interference performance and the better tracking effect.

The invention discloses an excavation and preliminary bracing method for a soft rock tunnel. The excavation and preliminary bracing construction for the soft rock tunnel are performed in sections from back to front. When any section is subjected to excavation and preliminary bracing construction, the method comprises the following steps: 1) confirming basic mechanical parameters of the surrounding rock; 2) confirming the reserved excavated volume of the tunnel: confirming the reserved excavated volume of the currently constructed section according to a theoretical value of inward displacement of the surrounding rock of the soft rock tunnel after being braced; 3) excavating the tunnel; 4) confirming a preliminary bracing structure of the tunnel; 5) constructing the preliminary bracing of the tunnel; 6) performing the excavation and preliminary bracing construction of the next section; and 7) repeating the step 6) till all the processes of the excavation and preliminary bracing construction of the soft rock tunnel are completed. The method disclosed by the invention has the advantages of simple steps, reasonable design, convenience in realization and good use effect; the reserved excavated volume is confirmed according to the surrounding rock deformation condition of the soft rock tunnel; and the steel bracket and the anchoring net sprayed preliminary bracing structure are coordinated for performing all-section preliminary bracing on the tunnel.

The invention discloses a short-distance coal seam roadway excavating and supporting method. The method comprises steps as follows: 1, basic mechanical parameters of surrounding rock are determined; 2, reserved excavated volumes of two sides of a roadway are determined; 3, the roadway is excavated; 4, a roadway side supporting structure is determined and comprises roadway supporting units and grouted rock bolts which are arranged in a staggered manner, and the roadway supporting units comprise top plate supporting systems, bottom plate supporting systems and roadway side supporting systems; and the limit caving arch rise is determined; 5, the roadway supporting structure is determined; 6, roadway surrounding rock supporting construction is performed; 7, excavation of the next section and roadway surrounding rock supporting construction are performed; 8, the step 7 is repeated multiple times, and the short-distance coal seam roadway construction process is completed. The method is simple, reasonable in design, convenient to realize and good in use effect, the reserved excavated volumes of the two sides of the roadway are determined respectively according to surrounding rock deformation conditions of the short-distance lower coal seam roadway, and whole section supporting is performed on the roadway through combination of the grouted rock bolts with the roadway supporting units.

The invention discloses an input saturation considered asynchronous motor command filter finite time fuzzy control method. Aiming at nonlinear problems of a motor driving and control system, a fuzzy logic system is adopted for approximation to a nonlinear function in the system, a command filter technique is introduced into a traditional backstepping design method, errors generated in filtering are reduced through introduction of a compensation mechanism, the problem of computation explosion caused by continuous derivation in traditional backstepping control is successfully solved, and control precision is improved. Small system stable tracking errors and short dynamic responding time under finite time control are realized, system convergence rate is increased, and interference rejection capability is improved. Under the condition of consideration of input saturation, bounded parameters of a closed-loop system can be guaranteed, and convergence of tracking errors of the system into a sufficiently small origin neighborhood in finite time can be guaranteed as well.

The invention relates to a chemical control preparation for enhancing the stress resistance and the seed yield of wheats and application thereof, in particular to a chemical regulation preparation for enhancing the low temperature resistance, the lodging resistance, the drought resistance and the seed yield of the wheats and application thereof, belonging to the technical field of crop growth and regulation. The chemical control preparation for enhancing the stress resistance and the seed yield of the wheats comprises the following compositions per kilogram: 0.02-0.06g of auxin, 0.8-1.2g of fluroxypyr, 1ml of surfactant, 1ml of non-protonation polar solvent and the balance of water. The chemical control preparation provided by the invention can control vigorous growth before winter and invalid tillering amount of crops above the ground part, save the nutrients, promote root downward growth, enable stem bases of most wheats to be vertical or approximately vertical to the ground and enhance the winter and prevernal freezing damage resistance and cold damage resistance of plants when enhancing the drought resistance of the plants.

The invention discloses a method for controlling caving of a roof of a short distance coal bed roadway. The method comprises steps as follows: 1, determination of basic mechanical parameters of surrounding rock; 2, determination of reserved excavated volumes of two sides of a roadway; 3, excavation of the roadway; 4, determination of a roadway side part supporting structure: a roadway support structure comprises roadway support units and grouting anchor rods which are arranged in a staggered manner, and each roadway side part support unit comprises a roof support system and a roadway side part support system; 4, determination of the vector height of extreme caving arches; 5, determination of the roadway support structure; 6, support construction of roadway surrounding rock; 7, excavation of the next section and support construction of the roadway surrounding rock; 8, completion of the construction process of the short distance coal bed roadway after repeated implementation of the step 7. The method adopts simple steps and is reasonable in design, convenient to implement and good in use effect; the reserved excavated volumes of two sides of the roadway are determined according to the surrounding rock deformation condition of the short distance coal bed roadway respectively, and the roadway side parts and the roof are supported through matching of the grouting anchor rods and the roadway support units.

The embodiment of the invention discloses a message authentication code MAC-I managing method, device and system, wherein the method comprises the steps of determining an UE which can start an RRC connection rebuilding process; determining a cell meeting the RRC connection rebuilding condition for the UE and computing and storing the MAC-I of the cell; receiving an RRC connection rebuilding request message with the MAC-I and a cell mark the corresponding cell of which belongs to the cell meeting the RRC connection rebuilding condition, which are sent by the UE; and comparing the MAC-I in the RRC connection rebuilding request message with the MAC-I of the cell corresponding to the cell mark, and deciding whether to accept the RRC connection rebuilding request of the UE or not. The embodiment of the invention provides a detailed technical scheme for MAC-I management by aiming at an intra-eNB scene, clarifies an occasion and a mode for generating MAC-I and effectively supplements the MAC-I management of an LTE system.

The invention discloses a soft rock tunnel excavation method based on anchor bolt stress and the soft rock tunnel is excavated by a plurality of sections in a longitudinally direction of the tunnel from rear to front. The method for excavating any section of the soft rock tunnel comprises the following steps: first, determing the basic mechanical parameters of surrounding rock; second, determing the reserved excavation capacity of tunnels: determing the capacity of reserved excavation of the current construction section according to a theoretical value S of the soft rock tunnel inward displacement after the completion of supporting, the S is the sum of plastic displacement of surrounding rock in soft rock tunnel and displacement after shaping deformation of surrounding rock in soft rock tunnel; third, the tunnel is excavated; fourth, the next section is excavated; fifth, repeating step fourth until the full excavation of the soft rock tunnel is completed. The soft rock tunnel excavation method has the advantages of simple steps, reasonable design and convenient implementation, and has good effect. The excavation capacity is determined according to the deformation of the surrounding rock of the soft rock tunnel, which can solve the problem of the reserve deformation of the soft rock tunnel, avoid the problem of soft rock tunnel repair work and cost less.

The invention discloses a close distance coal seam roadway excavation method based on roadway's side displacement analysis. The method comprises steps: 1, determining surrounding rock basic mechanical parameters; 2, determining reserved excavated volume of two sides of a roadway, including according to the determined surrounding rock basic mechanical parameters, combined with an inward displacement theoretical value of the pressing-side coal side of an overlaying rock and an inward displacement theoretical value of the pressing-side coal side of a coal pillar, determining reserved excavated volume of two sides of the roadway of a current construction segment; 3, excavating the roadway, including according to the determined reserved excavated volume of two sides of the roadway, excavating the current construction segment from back to front; 4, excavating a next segment; 5, repeating the step 4 for multiple times, until all excavation processes of the close distance coal seam roadway are completed. The method is simple in steps, rational in design, convenient in implementation, and good in use effect. The method respectively determines the reserved excavated volumes of two sides of the roadway according to surrounding rock deformation conditions of a close distance underlying seam roadway, and can solve a problem of intrusion roadway headroom after coal sides deform asymmetrically.

The invention discloses a method for preventing and controlling a floor heave disease of a short-distance coal seam roadway. The method comprises the following steps of: 1, determining basic mechanical parameters of surrounding rocks; 2, determining excavated volumes reserved on two sides of the roadway; 3, excavating the roadway; 4, determining a roadway side support structure: the roadway support structure comprises a plurality of roadway support units and a plurality of grouting anchor rods, and the roadway side support units are staggered with the grouting anchor rods and respectively comprise a bottom plate support system and a roadway side support system; 5, constructing a roadway surrounding rock support; 6, excavating the next section and constructing the roadway surrounding rock support; and 7, repeating the step 6 until all the excavation of the short-distance coal seam roadway and the construction process of the roadway surrounding rock support are finished. The method disclosed by the invention is reasonable in design, convenient to realize and good in using effect; and the excavated volumes reserved on the two sides of the roadway are respectively determined according to the surrounding rock deformation condition of the short-distance lower coal seam roadway, and the grouting anchor rods and the roadway support units are matched to effectively support the roadway, so that the floor heave problem of the roadway can be effectively solved.

The invention relates to a method for converting the data distributing document between different software versions, and a relative device, wherein it comprises: setting the default data distributing document relative to present version; based on said default document and conversion rule, converting the data distributing document in original version into the one in present version, to make the data distributing document automatically convert based on the grammar document and default data distributing document. With said invention, the conversion of data distributing document can avoid background software, and the backspace and upgrade of software versions are consistent.